Author: Robert Hyatt
Date: 19:27:59 04/09/01
Go up one level in this thread
On April 09, 2001 at 18:28:58, Vincent Diepeveen wrote: >On April 09, 2001 at 18:21:52, Robert Hyatt wrote: > >>On April 09, 2001 at 17:08:49, Vincent Diepeveen wrote: >> >>>On April 09, 2001 at 16:49:21, Normand M. Blais wrote: >>> >>>>On April 09, 2001 at 16:21:56, Andrei Fortuna wrote: >>>> >>>> >>>>>positional score > 2 PAWN_VALUE. And that will hurt my quiescence and my >>>>>futility pruning if I assume that 2*PAWN_VALUE is max positional score. It all >>>>>boils down to the magnitude of the positional scores versus pawn value, I think >>>>>I have to choose either to keep big bonuses and turn futility off (or set a >>>>>bigger margin for futility but in that case it would make futility more >>>>>inefficient) or keep small bonuses and enjoy the reductions I get from futility >>>>>and quiescence. >>>> >>>>What if you multiply the value of the material by 10 (i.e. pawn = 1000 Knight = >>>>3000 Bishop = 3000 Rook = 5000 Queen = 10000 ) and keep the positional score as >>>>it is. >>>> >>>>N.M.B. >>> >>>then his program will volunteerly >>>accept a pawn and get mated a few moves later. >>> >>>A good test position is DIEP - crafty wmccc2000: >>> >>>e2-e4 (2:00:00,2:00:00) book >>>c7-c5 (2:00:00,1:59:19) >>>g1-f3 (2:00:00,1:59:19) book >>>d7-d6 (2:00:00,1:59:06) >>>d2-d4 (2:00:00,1:59:06) book >>>c5xd4 (2:00:00,1:58:48) >>>f3xd4 (1:59:59,1:58:48) book >>>g8-f6 (1:59:59,1:58:21) >>>b1-c3 (1:59:59,1:58:21) book >>>a7-a6 (1:59:59,1:58:02) >>>c1-g5 (1:59:59,1:58:02) book >>>e7-e6 (1:59:59,1:57:44) >>>f2-f4 (1:59:59,1:57:44) book >>>d8-b6 (1:59:59,1:57:29) >>>d1-d2 (1:59:59,1:57:29) book >>>b6xb2 (1:59:59,1:57:16) >>>a1-b1 (1:59:59,1:57:16) book >>>b2-a3 (1:59:59,1:56:53) >>>f4-f5 (1:59:59,1:56:53) book >>>b8-c6 (1:59:59,1:56:28) >>>f5xe6 (1:59:59,1:56:28) book >>>f7xe6 (1:59:59,1:55:59) >>>d4xc6 (1:59:59,1:55:59) book >>>b7xc6 (1:59:59,1:55:43) >>>e4-e5 (1:59:59,1:55:43) book >>>d6xe5 (1:59:59,1:51:36) >>>g5xf6 (1:59:59,1:51:36) book >>>g7xf6 (1:59:59,1:50:43) >>>c3-e4 (1:59:59,1:50:43) book >>>f8-e7 (1:59:59,1:46:38) >>>f1-e2 (1:59:59,1:46:38) book >>> >>>Here crafty played O-O?? it castled straight into the mate here by >>>doing that. O-O is a big blunder. Diep wmccc2000 played h5 there. >>> >>>Let's have a look whether current version also does that... >>> >>> >>> >>> >>> >>>best regards, >>>Vincent >> >> >>If you will post it in a standard machine readable form rather than in >>that e2-e4 gobbledygook, I will try it. >> >>:) > >K:\diep>type forbob.fen >r1b1k2r/4b2p/p1p1pp2/4p3/4N3/q7/P1PQB1PP/1R2K2R b Kkq - >h5! o-o?? > >Note you should also checkout the operating time your operator >needed. Cool man, but should not operate crafty. Learned a lot >about computerchess i guess in that tournament. > >You need an operator who can operate it at 7 0 too ! O-O was a book move. There are three book choices here. Rb3, O-O and Bf3... Crafty with no book plays Bf3, but the eval is -1.85 so it thinks white is nearly lost already in this line... After 30 seconds it likes c4, but still thinks white is lost.
This page took 0 seconds to execute
Last modified: Thu, 15 Apr 21 08:11:13 -0700
Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.